Solving by Factoring and Quadratic Formula

Convert x²+6x+9 to factored form and identify the solution.

• (x+3)(x+3); x=-3

• (x+4)(x+5); x=-4, -5

• (x-3)(x-3); x=3

• Not factorable

Tags

CCSS.HSA-REI.B.4B

What are the factors AND solutions of x² + 2x – 3 = 0

• (x - 2)(x + 1); x=2, x=-1

• (x + 1)(x - 3); x=-1, x=3

• (x + 2)(x - 1); x=-2, x=1

• (x - 1)(x + 3); x=1, x=-3

Tags

CCSS.HSA-REI.B.4B

If the discriminant equals 0, then the quadratic has:

• Real Solution

• Real Solutions

• Half a Solution

• No Real Solution

Tags

CCSS.HSA-REI.B.4B

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form

• Write down: a=1, b=6, c=-13

• Make it equal 0 by subtracting 3 on each side

• Type it all in a calculator.

Tags

CCSS.HSA-REI.B.4B

Which equation matches these solutions? x=5,-7

• (x+5)(x-7)=0

• (x-5)(x+7)=0

• (x+5)(x+7)=0

• (x-5)(x-7)=0

Tags

CCSS.HSA-REI.B.4B

Solve the following equation for x:
(x - 4)(x + 5) = 0

• x = 4 and x = −5

• x = −4 and x = 5

• x = 4

• x = −5

Tags

CCSS.HSA-REI.B.4B

• -2

• 2

• 2x

• 3

Tags

CCSS.HSA-REI.B.4B

What is the equation of this parabola in its factored form?

• y=(x+1)(x+3)

• y=(x-1)(x-3)

• y=-(x+1)(x+3)

• y=-(x-1)(x-3)

Tags

CCSS.HSF-IF.C.7A